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LengthOfLastWord.cpp

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LengthOfLastWord.cpp

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/**

Given a string s consists of upper/lower-case alphabets and empty space characters ' ',

return the length of last word in the string.

If the last word does not exist, return 0.

Note: A word is defined as a character sequence consists of non-space characters only.

For example,

Given s = "Hello World",

return 5.

*/

class Solution {

public:

int lengthOfLastWord(const char *s) {

int n = strlen(s);

int len = 0;

for (int i = n-1; i >=0; --i) {

if (s[i] != ' ') {

len ++;

}

else {

if (len >0) break;

}

}

return len;

}

};